Current sensing device and method

Abstract

The present invention provides a current sensing device and method suitable for multi-core wires. The current sensing device includes a carrier, a plurality of magnetic sensors and a processor, wherein the processor is electrically connected to the plurality of magnetic sensors. The carrier has an accommodating channel for accommodating multi-core wires. The plurality of magnetic sensors are arranged on the carrier and surround the accommodating channel, equally divide the 360-degree outer circumference of the accommodating channel, and are used to respectively measure the alternating magnetic field when the multi-core wire is energized to generate multiple sets of magnetic field measurement values, wherein each A set of magnetic field measurements corresponds to one of the plurality of magnetic sensors. The processor stores the current decoupling model, and is used to obtain the multiple sets of magnetic field measurement values ​​from the plurality of magnetic sensors, and calculate each core of the multi-core wire according to the current decoupling model and the multiple sets of magnetic field measurement values line current value.

Description

technical field [0001] The invention relates to a current sensing device, in particular to a current sensing device suitable for multi-core wires. Background technique [0002] In modern industrial industries, all kinds of equipment need to rely on electricity to operate. When there is power imbalance or harmonic interference, the loss of electric power will lead to problems such as an increase in line temperature, and in severe cases, it may even cause equipment failure or shutdown. Among them, the situation of unbalanced power often comes from the inconsistency of the currents transmitted by the multiple core wires in the wires that transmit power. Therefore, current transformers or shunt resistors are often used to detect the current of the wires. [0003] However, these current sensing devices are only suitable for measuring single core wires, that is to say, if you want to use these current sensing devices to measure a wire containing multiple core wires, you need to d...

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Problems solved by technology

[0003] However, these current sensing devices are only suitable for measuring single core wires, that is to say, if you want to use these current sensing devices to measure a wire containing multiple core wires, you need to disassemble the wire to expose the contained core wires , and then measure these core wires separately, it will not only cause damage to the wires, but also cannot be measured in real time during the operation of the equipment

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